Use Of Ncr - Casio fx-9860GII Instructions Manual

Calculating binomial probabilities
5.11 The use of nCr
Example 50
⎛ ⎞
8
Find the value of ⎜ ⎟ (or
3
⎝ ⎠
MENU
Press . You will see the dialog box as shown on the right.
Choose 1: RUN·MAT and press
Press |
OPTN F6 F3
Press 8 nCr 3
F3 EXE
Example 51
⎛ ⎞
4
⎜ ⎟
List the values of for r = 0, 1, 2, 3, 4.
r
⎝ ⎠
Press MENU . You will see the dialog box as shown on the right.
Choose 7: TABLE and press
Press OPTN F4 PROB to enter probability menu.
F3
Press 4 nCr X,i,T
F6
Press TABL.
The table shows that
⎛ ⎞ ⎛ ⎞ ⎛ ⎞
4 4 4
= = =
⎜ ⎟ 1 , ⎜ ⎟ 1 , ⎜ ⎟ 4 ,
0 0 1
⎝ ⎠ ⎝ ⎠ ⎝ ⎠
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
C ).
8 3
EXE
.
PROB to enter probability menu.
.
EXE .
EXE .
⎛ ⎞ ⎛ ⎞ ⎛ ⎞
4 4 4
= =
⎜ ⎟ 6 , ⎜ ⎟ 4 and ⎜ ⎟
2 3 4
⎝ ⎠ ⎝ ⎠ ⎝ ⎠
You may need to reset
the start value and
= step values for the
1
F5
table using SET.
Casio fx-9860GII
Using a graphic display calculator 46